Energy storage power supply



FIG. 1 is a front, right, and top perspective view of an energy storage power supply, showing my new design;

FIG. 2 is a rear, left, and bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left elevational view thereof;

FIG. 6 is a right elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines depict portions of the energy storage power supply that form no part of the claimed design. 

CLAIM The ornamental design for an energy storage power supply, as shown and described. 